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Researchers at the National University of Singapore have built a beam of darkness that can make objects invisible from a long distance away. This isn’t the plot from some not-so-distant sci-fi movie: It really works. The beam of darkness can create a 3D region of invisibility — or “empty light capsule” as the researchers call it — that can hide ...

A researcher at the University of Texas at Austin has devised an invisibility cloak that could work over a broad range of frequencies, including visible light and microwaves. This is a significant upgrade from current invisibility cloaks that only cloak a very specific frequency — say, a few hertz in the microwave band — and, more importantly, actually make cloaked ...